张思民安卓 第三次作业(6页)Good is good, but better carries it.精益求精，善益求善。1.Xml: Java:package com.example.andy.androidclass3;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.ImageView;public class MainActivity extends AppCompatActivity implements View.OnClickListener{ private Button button1,button2; private ImageView imageView; private int [] imgs ={R.mipmap.img1, R.mipmap.img2,R.mipmap.img3,R.mipmap.img4,R.mipmap.img5,R.mipmap.img6}; int index = 0; final int upper_limit=6; final int lower_limit=-1; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); button1 = (Button) findViewById(R.id.front); button2 = (Button) findViewById(R.id.tail); imageView = (ImageView) findViewById(R.id.image); button1.setOnClickListener(this); button2.setOnClickListener...
